<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        let fun = function(){

        }

        let fun02 = (a,b)=>{
            return a+b
        }
        //调用函数
        var res = fun02(1,2)



        //1.箭头函数，this 是静态的
        //this始终指向函数声明时所在作用域下的this的值

         








    </script>
    
</body>
</html>